As always, the music here is a soundtrack to hellish visions of eternal suffering and demonic torture, a sonic counterpart to Bosch's images of Hell (and as a matter of fact, a closeup of part of one of Bosch's paintings is featured as the interior spread of the booklet for Casus Luciferi, depicting two demons in the act of sodomizing some poor bastard), but here Abruptum go for pure mood and atmo